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Home > Products > Integrated Circuits (ICs) > Logic > Gates and Inverters

Nexperia USA Inc. 74AHC02D,118

Name: 74AHC02D,118
Brand: Nexperia USA Inc.
SKU: 74AHC02D,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AHC02D,118

Manufacturer:: Nexperia USA Inc.

Category:: Gates and Inverters

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: 74AHC02D,118.pdf

Description:: IC GATE NOR 4CH 2-INP 14SO

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Product details

Overview

74AHC02D,118 from Nexperia is a quad 2-input NOR gate IC in SO14 (SOT108-1) package, operating from 2.0 V to 5.5 V supply, with propagation delay as low as 2.9 ns (VCC = 5 V, CL = 15 pF), CMOS-level input compatibility, and guaranteed operation from −40 °C to +125 °C. It serves as a logic-level combinatorial gate in digital control, address decoding, and bus arbitration circuits.

For engineers reviewing the 74AHC02D,118 datasheet, 74AHC02D,118 pinout, 74AHC02D,118 application, or 74AHC02D,118 equivalent, this page delivers verified pin functions, real-world timing behavior under load, thermal derating data for SO14, TTL-compatible alternatives, and precise static/dynamic specifications per JEDEC 7-A compliance.

Technical Context

This device implements four independent 2-input NOR gates using high-speed Si-gate CMOS technology, pin-compatible with LSTTL. Each gate features Schmitt-trigger inputs enabling noise immunity on slow-rising signals and supports input voltages up to 7.0 V regardless of VCC.

It operates across two logic families: 74AHC02 (CMOS-level inputs, VIH = 3.85 V at VCC = 5.5 V) and 74AHCT02 (TTL-level inputs, VIH = 2.0 V min). The SO14 package (SOT108-1) provides 14 leads, 3.9 mm body width, and thermal derating of 10.1 mW/K above 100 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	Quad 2-input NOR - four independent gates, each outputting HIGH only when both inputs are LOW
Supply Voltage Range	2.0 V to 5.5 V - supports mixed-voltage system interfacing and battery-backed 3.3 V/5 V designs
Propagation Delay (tpd)	2.9 ns typical (VCC = 4.5–5.5 V, CL = 15 pF) - enables sub-100 MHz synchronous logic operation
Input Thresholds	CMOS-level: VIH = 3.85 V, VIL = 1.65 V at VCC = 5.5 V - ensures robust noise margin in 5 V systems
Output Drive	±8 mA at VCC = 4.5 V - sufficient to drive 10 LSTTL loads or 15 pF capacitive bus lines
Operating Temperature	−40 °C to +125 °C - qualified for industrial and extended-temperature embedded control environments
ESD Protection	HBM > 2000 V, CDM > 1000 V - meets ANSI/ESDA/JEDEC JS-001/JS-002 Class 2/C3 for board-level handling

Pinout & Package

74AHC02D,118 is housed in a plastic small outline package (SO14, SOT108-1) with 14 leads, 3.9 mm body width, and standard 1.27 mm lead pitch. Pin 1 is marked by an index notch or dot; pin 7 is GND, pin 14 is VCC.

Pin	Circuit Role	Design Meaning
1, 4, 10, 13	1Y, 2Y, 3Y, 4Y	Independent NOR gate outputs - each sinks/sourcing ±8 mA, rail-to-rail swing
2, 5, 8, 11	1A, 2A, 3A, 4A	First input per gate - Schmitt-triggered, accepts 0–7 V regardless of VCC
3, 6, 9, 12	1B, 2B, 3B, 4B	Second input per gate - identical electrical behavior to A inputs
7	GND	Ground reference (0 V) - must be connected to system ground plane for stable logic thresholds
14	VCC	Positive supply - decoupling capacitor (100 nF) required within 10 mm of this pin

Key Features

Feature	Design Value
Schmitt-trigger inputs	Enables reliable switching on slow or noisy signals (e.g., mechanical switch debouncing without external RC)
Overvoltage-tolerant inputs	Accepts up to 7.0 V on any input while VCC = 2.0–5.5 V - simplifies level-shifting in mixed-supply systems
Balanced propagation delays	tPLH and tPHL match within ±0.5 ns - critical for glitch-free enable/disable sequencing in synchronous logic
Wide temperature range	Specified from −40 °C to +125 °C - validated for use in motor control, power supply monitoring, and industrial PLC I/O modules
Low static current	ICC ≤ 40 μA at VCC = 5.5 V - reduces quiescent power in always-on logic supervision circuits

Applications

Industrial Control Logic

Microcontroller Bus Interface

Use Scenario: Disabling peripheral chip selects during reset or fault conditions in programmable logic controllers.

IC Role / Device Role / Timing Role: NOR gate acts as active-LOW enable combiner, asserting /CS only when both /RESET and /FAULT are HIGH.

Use Value: Eliminates need for discrete pull-up resistors and inverters; propagation delay <7 ns ensures no race condition with MCU clock startup.

Use Scenario: Generating synchronized write strobes for parallel memory expansion on 8-bit microcontrollers.

IC Role / Device Role / Timing Role: Combines /WR and address decode outputs to produce clean, glitch-free /WE signal.

Use Value: Schmitt-trigger inputs reject noise on /WR line; matched tPLH/tPHL prevents setup/hold violations at SRAM inputs.

Digital Power Sequencing

Legacy System Glue Logic

Use Scenario: Enabling DC-DC converter enable pins only after all upstream rails reach regulation.

IC Role / Device Role / Timing Role: Four-input OR function implemented via cascaded NOR gates to monitor multiple PGOOD signals.

Use Value: Input overvoltage tolerance allows direct connection to 3.3 V PGOOD outputs even when VCC = 5 V - no level shifter needed.

Use Scenario: Adapting legacy TTL-based instrumentation interfaces to modern CMOS FPGAs.

IC Role / Device Role / Timing Role: Translates 5 V TTL logic levels to 3.3 V CMOS-compatible signals while preserving timing integrity.

Use Value: 2.9 ns tpd at 5 V ensures compatibility with 33 MHz ISA bus timing; SO14 footprint matches legacy PCB layouts.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input NOR gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
74AHCT02D,118	TTL-level inputs (VIH = 2.0 V min), otherwise identical SO14 packaging and timing	Required when interfacing directly with legacy 5 V TTL outputs without level shifters	Select when driving from 74LS/74F series; avoid if interfacing with 3.3 V CMOS microcontrollers
SN74LVC02APWR	Lower VCC range (1.65–5.5 V), higher drive (±24 mA), but no Schmitt-trigger inputs	Preferred for 1.8 V/2.5 V systems; unsuitable for noisy or slow-rising signals without external hysteresis	Choose for ultra-low-voltage operation or higher fanout; verify input rise time compliance before substitution

Compared with 74AHC02D,118, the 74AHCT02D,118 offers TTL input compatibility at identical speed and package, while SN74LVC02APWR extends voltage range and drive strength but sacrifices noise-immune input thresholds - selection depends on interface voltage domain and signal integrity requirements.

Availability

74AHC02D,118 is available at Aetrix Electronics and suitable for industrial control logic, microcontroller bus interface, digital power sequencing, and legacy system glue logic requiring stable component supply across extended temperature ranges.

Supply support for 74AHC02D,118 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74AHC/AHCT series targets high-speed, low-power digital logic applications where pin compatibility with legacy TTL and robust noise immunity are critical - especially in industrial automation and power management subsystems.

FAQ

Can 74AHC02D,118 operate reliably at 2.0 V supply?

Yes. The device is fully specified down to 2.0 V: VIH = 1.5 V min, VOL ≤ 0.55 V at 4 mA load, and tpd ≤ 10.0 ns (CL = 15 pF). This enables use in battery-powered 2.5 V or dual-supply systems where logic must remain functional during brownout conditions.

What is the maximum capacitive load this device can drive without exceeding timing specs?

At VCC = 5.5 V, the datasheet guarantees tpd ≤ 7.0 ns with CL = 15 pF and ≤ 9.5 ns with CL = 50 pF. Driving >50 pF will increase delay nonlinearly and may cause marginal timing in high-speed buses; for >50 pF loads, add series termination or buffer stages.

Is the SO14 package RoHS-compliant and lead-free?

Yes. Nexperia's SOT108-1 package for 74AHC02D,118 is lead-free, halogen-free, and compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with peak reflow temperature rated to 260 °C per J-STD-020.

Does this part support hot-swap or live-insertion?

No. The device lacks powered-off protection or Ioff specification. Applying input signals while VCC = 0 V violates absolute maximum ratings (VI = −0.5 V to +7.0 V only when VCC is present), risking latch-up or ESD damage. Always power VCC before applying inputs.

74AHC02D,118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74AHC

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: NOR Gate

Number of Circuits:: 4

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 2V ~ 5.5V

Current - Quiescent (Max):: 2 µA

Current - Output High, Low:: 8mA, 8mA

Input Logic Level - Low:: 0.5V ~ 1.65V

Input Logic Level - High:: 1.5V ~ 3.85V

Max Propagation Delay @ V, Max CL:: 7.5ns @ 5V, 50pF

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

74AHC02D,118 FAQ

1.How can I place an order for 74AHC02D,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AHC02D,118 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74AHC02D,118 reliable?

The price and inventory of 74AHC02D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC02D,118 is usually 5 days.

3.What payment methods are accepted for 74AHC02D,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC02D,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AHC02D,118?

74AHC02D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AHC02D,118 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74AHC02D,118?

For technical support, including 74AHC02D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC02D,118 requirements.

6.How does Aetrix verify that 74AHC02D,118 is sourced from the original manufacturer or authorized distributors?

All 74AHC02D,118 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74AHC02D,118 meets industry standards.

7.What is the process for return or replacement of 74AHC02D,118?

All 74AHC02D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC02D,118, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74AHC02D,118 part is unused and in its original packaging.

Return procedure for 74AHC02D,118:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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